text: import os
  import sys
  sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
  
  from datautils.synthetic.sample_data import sample_synthetic
  from datautils.mushroom.sample_data import sample_mushroom
  
  from models.context_free_policy import (
          EpsilonGreedyPolicy,
          RandomPolicy,
          SampleMeanPolicy,
          UCBPolicy
          )
  from models.disjoint_contextual_policy import (
          LinUCBPolicy,
          LinearGaussianThompsonSamplingPolicy,
          )
  from environments.runner_cb import simulate_cb
  #from environments.runner_por_cb import simulate_por_cb
  